Houman, all,
I have read twice your posts about religions. I can't say it's a bad system but there are big problems:
1) As Warkirby wrote (if i well remember

) when Buddism spread, it quickly cover most of the world. Alliances of civs that follow this faith attack and destroy or convert others civs that follow other faiths.

It happened to Warkirby as it happened to me...
2) Taoism is a local religion. China, only China.
3) Explain to me how Judaism spread in Europe, Russia or USA if it's only a local religion.

Something had to be done to allow this religion to spread a little.
Why not a system to allow Judaism to spread if the Holy Shrine is conquered (as it was in 79 AC when Jerusalem was conquered by Roman Legions and Jews fled in many cities, spreading their faith all around the Mediterannean Sea) ?
4) Hinduism is a local religion. But what a local religion, around one Billion people.

You says that it's because of his caste system.... Even it don't have this name (caste system), this civic was also used in most of the Far east countries (Korea, China, Japan) and they are not Hinduist. It was nearly impossible in these countries for a peasant or worker to become a great or rich man (Merchant, Noble,....)
Why not allowing the spreading of Hinduism in countries using this civic ?
5) Islam and Christianism are the two religions that are far beyond the Billion... They also spreaded in large parts of the world.
When founded, i suggest to give more than one missionary (as somebody wrote, sorry forget your name Man
).
6) Islam and Christianism are the main religions but they are also the most schismatic... Shiite, Orthodox church, Protestant church,...and so on. That's why i feel strange to allow them to be world religion. Shiite and Sunnite hate each other (todays Irak is good exemple) as Orthodox and Roman Catholicism (Moscow Great Patriarch still refuses a visit of the Pope)...
7) Is it possible to add new religions ? More than 7....
I conclude: this system seems good but still have many weakness. Something had to be done to allow local religions to survive and to spread a little. World religions quickly become very powerfull and create diplomatic and military problems.

And i can really tell you that it's a big, very big bonus to be the owner of such a holy shrine. (i had test it as a Russian TR World map, Christian religion)
That's just my opinion. Guys, i wait for comments. Just to improve a good system to a very good one.
The Frog.
PS: for all those who love football/soccer, France vs Italy 3-1 .

Now, everybody knows who are really the best....